﻿<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" 
           xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="updates">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="application">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="title" type="xs:string">
                <xs:annotation>
                  <xs:documentation>The name of the application being updated.</xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element name="location" type="xs:string">
                <xs:annotation>
                  <xs:documentation>The location of the update xml page.</xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element name="download" type="xs:string">
                <xs:annotation>
                  <xs:documentation>Location of the download page.</xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element name="frequency" type="xs:string" >
                <xs:annotation>
                  <xs:documentation>The frequency we need to check for updates to the application, any valid TimeSpan.</xs:documentation>
                </xs:annotation>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element maxOccurs="unbounded" name="version">
          <xs:annotation>
            <xs:documentation>This element describes a new version of the application.</xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:choice minOccurs="0" maxOccurs="unbounded" >
              <xs:element name="feature" type="xs:string">
                <xs:annotation>
                  <xs:documentation>Description of a new feature added in this version.</xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element name="bug" type="xs:string" >
                <xs:annotation>
                  <xs:documentation>Description of a bug fixed in this version.</xs:documentation>
                </xs:annotation>
              </xs:element>
            </xs:choice>
            <xs:attribute name="number" type="xs:string" use="required">
              <xs:annotation>
                <xs:documentation>The version number.</xs:documentation>
              </xs:annotation>
            </xs:attribute>           
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>